tofsee | d603acfc491fc6aef164ec80eed5039fbfb5a8ae381869b3aa590227a0d4104b

General

Target

39da0555f5c4ad1f89d9e718ec73822f.exe
Size

14.8MB
MD5

39da0555f5c4ad1f89d9e718ec73822f
SHA1

8abd6a946f9d97af83829cdb65283f48acd860eb
SHA256

d603acfc491fc6aef164ec80eed5039fbfb5a8ae381869b3aa590227a0d4104b
SHA512

210b6dcef0d5d185f680083259f76b55cc17109d1e60a88689ba24f33a65bdb9719f76b5b95d8c8ecaee61eda172497aefe566ec511e6b8494edd1843fbc1fe7
SSDEEP

6144:c+rWO2zeSPDjMXMH7Ll4aFpWVqIwUAP97GEwHrG2+e1x2:c+r1IeSXMXc7LlxWV4Ug97GZ+ej

Score

10^/10

tofsee evasion execution persistence privilege_escalation trojan

Malware Config

Extracted

Family

tofsee

C2

43.231.4.7

lazystax.ru

Signatures

Tofsee
Backdoor/botnet which carries out malicious activities based on commands from a C2 server.
trojan tofsee

Windows security bypass 2 TTPs 1 IoCs

evasion trojan

Disable or Modify Tools

T1562.001

Modify Registry

T1112

Processes:

svchost.exe

description	ioc	process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Windows\SysWOW64\wlvwhqnm = "0"	svchost.exe

Creates new service(s) 2 TTPs
persistence execution

Windows Service
T1543.003

Service Execution
T1569.002
Modifies Windows Firewall 2 TTPs 1 IoCs
evasion

Windows Service
T1543.003

Disable or Modify System Firewall
T1562.004

Processes:

netsh.exe

pid process

2696 netsh.exe

pid	process
2696	netsh.exe

Sets service image path in registry 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

svchost.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\wlvwhqnm\ImagePath = "C:\\Windows\\SysWOW64\\wlvwhqnm\\sqxtsbzq.exe"	svchost.exe

Deletes itself 1 IoCs

Processes:

svchost.exe

pid process

2584 svchost.exe
Executes dropped EXE 1 IoCs

Processes:

sqxtsbzq.exe

pid process

2668 sqxtsbzq.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

sqxtsbzq.exe

description pid process target process

PID 2668 set thread context of 2584 2668 sqxtsbzq.exe svchost.exe
Launches sc.exe 3 IoCs
Sc.exe is a Windows utlilty to control services on the system.

Processes:

sc.exesc.exesc.exe

pid process

2196 sc.exe
2512 sc.exe
2612 sc.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
2584	svchost.exe

pid	process
2668	sqxtsbzq.exe

description	pid	process	target process
PID 2668 set thread context of 2584	2668	sqxtsbzq.exe	svchost.exe

pid	process
2196	sc.exe
2512	sc.exe
2612	sc.exe

Event Triggered Execution: Netsh Helper DLL 1 TTPs 3 IoCs

Netsh.exe (also referred to as Netshell) is a command-line scripting utility used to interact with the network configuration of a system.

persistence privilege_escalation

Netsh Helper DLL

T1546.007

Processes:

netsh.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\NetSh	netsh.exe
Key queried	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\NetSh	netsh.exe
Key value enumerated	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\NetSh	netsh.exe

Suspicious use of WriteProcessMemory 30 IoCs

Processes:

39da0555f5c4ad1f89d9e718ec73822f.exesqxtsbzq.exe

description	pid	process	target process
PID 2076 wrote to memory of 2748	2076	39da0555f5c4ad1f89d9e718ec73822f.exe	cmd.exe
PID 2076 wrote to memory of 2748	2076	39da0555f5c4ad1f89d9e718ec73822f.exe	cmd.exe
PID 2076 wrote to memory of 2748	2076	39da0555f5c4ad1f89d9e718ec73822f.exe	cmd.exe
PID 2076 wrote to memory of 2748	2076	39da0555f5c4ad1f89d9e718ec73822f.exe	cmd.exe
PID 2076 wrote to memory of 1660	2076	39da0555f5c4ad1f89d9e718ec73822f.exe	cmd.exe
PID 2076 wrote to memory of 1660	2076	39da0555f5c4ad1f89d9e718ec73822f.exe	cmd.exe
PID 2076 wrote to memory of 1660	2076	39da0555f5c4ad1f89d9e718ec73822f.exe	cmd.exe
PID 2076 wrote to memory of 1660	2076	39da0555f5c4ad1f89d9e718ec73822f.exe	cmd.exe
PID 2076 wrote to memory of 2196	2076	39da0555f5c4ad1f89d9e718ec73822f.exe	sc.exe
PID 2076 wrote to memory of 2196	2076	39da0555f5c4ad1f89d9e718ec73822f.exe	sc.exe
PID 2076 wrote to memory of 2196	2076	39da0555f5c4ad1f89d9e718ec73822f.exe	sc.exe
PID 2076 wrote to memory of 2196	2076	39da0555f5c4ad1f89d9e718ec73822f.exe	sc.exe
PID 2076 wrote to memory of 2512	2076	39da0555f5c4ad1f89d9e718ec73822f.exe	sc.exe
PID 2076 wrote to memory of 2512	2076	39da0555f5c4ad1f89d9e718ec73822f.exe	sc.exe
PID 2076 wrote to memory of 2512	2076	39da0555f5c4ad1f89d9e718ec73822f.exe	sc.exe
PID 2076 wrote to memory of 2512	2076	39da0555f5c4ad1f89d9e718ec73822f.exe	sc.exe
PID 2076 wrote to memory of 2612	2076	39da0555f5c4ad1f89d9e718ec73822f.exe	sc.exe
PID 2076 wrote to memory of 2612	2076	39da0555f5c4ad1f89d9e718ec73822f.exe	sc.exe
PID 2076 wrote to memory of 2612	2076	39da0555f5c4ad1f89d9e718ec73822f.exe	sc.exe
PID 2076 wrote to memory of 2612	2076	39da0555f5c4ad1f89d9e718ec73822f.exe	sc.exe
PID 2668 wrote to memory of 2584	2668	sqxtsbzq.exe	svchost.exe
PID 2668 wrote to memory of 2584	2668	sqxtsbzq.exe	svchost.exe
PID 2668 wrote to memory of 2584	2668	sqxtsbzq.exe	svchost.exe
PID 2668 wrote to memory of 2584	2668	sqxtsbzq.exe	svchost.exe
PID 2668 wrote to memory of 2584	2668	sqxtsbzq.exe	svchost.exe
PID 2668 wrote to memory of 2584	2668	sqxtsbzq.exe	svchost.exe
PID 2076 wrote to memory of 2696	2076	39da0555f5c4ad1f89d9e718ec73822f.exe	netsh.exe
PID 2076 wrote to memory of 2696	2076	39da0555f5c4ad1f89d9e718ec73822f.exe	netsh.exe
PID 2076 wrote to memory of 2696	2076	39da0555f5c4ad1f89d9e718ec73822f.exe	netsh.exe
PID 2076 wrote to memory of 2696	2076	39da0555f5c4ad1f89d9e718ec73822f.exe	netsh.exe

C:\Users\Admin\AppData\Local\Temp\39da0555f5c4ad1f89d9e718ec73822f.exe
"C:\Users\Admin\AppData\Local\Temp\39da0555f5c4ad1f89d9e718ec73822f.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:2076

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\wlvwhqnm\
2⤵
PID:2748

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\sqxtsbzq.exe" C:\Windows\SysWOW64\wlvwhqnm\
2⤵
PID:1660

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" create wlvwhqnm binPath= "C:\Windows\SysWOW64\wlvwhqnm\sqxtsbzq.exe /d\"C:\Users\Admin\AppData\Local\Temp\39da0555f5c4ad1f89d9e718ec73822f.exe\"" type= own start= auto DisplayName= "wifi support"
2⤵
- Launches sc.exe
PID:2196

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" description wlvwhqnm "wifi internet conection"
2⤵
- Launches sc.exe
PID:2512

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" start wlvwhqnm
2⤵
- Launches sc.exe
PID:2612

C:\Windows\SysWOW64\netsh.exe
"C:\Windows\System32\netsh.exe" advfirewall firewall add rule name="Host-process for services of Windows" dir=in action=allow program="C:\Windows\SysWOW64\svchost.exe" enable=yes>nul
2⤵
- Modifies Windows Firewall
- Event Triggered Execution: Netsh Helper DLL
PID:2696

C:\Windows\SysWOW64\wlvwhqnm\sqxtsbzq.exe
C:\Windows\SysWOW64\wlvwhqnm\sqxtsbzq.exe /d"C:\Users\Admin\AppData\Local\Temp\39da0555f5c4ad1f89d9e718ec73822f.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2668

C:\Windows\SysWOW64\svchost.exe
svchost.exe
2⤵
- Windows security bypass
- Sets service image path in registry
- Deletes itself
PID:2584

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

System Services

1

T1569

Service Execution

1

T1569.002

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Create or Modify System Process

2

T1543

Windows Service

2

T1543.003

Event Triggered Execution

1

T1546

Netsh Helper DLL

1

T1546.007

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Create or Modify System Process

2

T1543

Windows Service

2

T1543.003

Event Triggered Execution

1

T1546

Netsh Helper DLL

1

T1546.007

Defense Evasion

Impair Defenses

2

T1562

Disable or Modify System Firewall

1

T1562.004

Disable or Modify Tools

Modify Registry

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\sqxtsbzq.exe

Filesize
10.2MB

MD5
8a58ff5224dc79db630f894e6d76c360

SHA1
2691f0f3da8d584f10ff0b9815bea3ea3e7f3688

SHA256
eadcc4919d6071b9593db6e93fb9eb34029d307d2c6ce8d407c5fda4f7b81f37

SHA512
9e9d10350657423035ded571f4937b5d3e4e348b2a24af91f98816903a2ad0e4d0cee81bac83e7329bfb92d7ebf4d0e7b5d37046541b612a2f7644efd3c46770

Download Submit
memory/2076-2-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2076-1-0x0000000000250000-0x0000000000350000-memory.dmp

Filesize
1024KB

Download
memory/2076-14-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2076-13-0x0000000000400000-0x000000000051A000-memory.dmp

Filesize
1.1MB

Download
memory/2584-10-0x00000000000D0000-0x00000000000E5000-memory.dmp

Filesize
84KB

Download
memory/2584-9-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2584-7-0x00000000000D0000-0x00000000000E5000-memory.dmp

Filesize
84KB

Download
memory/2584-15-0x00000000000D0000-0x00000000000E5000-memory.dmp

Filesize
84KB

Download
memory/2584-16-0x00000000000D0000-0x00000000000E5000-memory.dmp

Filesize
84KB

Download
memory/2668-11-0x0000000000400000-0x000000000051A000-memory.dmp

Filesize
1.1MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads